Influence of the External Extreme Conditions on the Operation of the New Generation Aircraft

The basic global geophysical cyclic processes, which are forming climatic conditions on the Earth, are heat exchange, moisture exchange and the general circulation of atmosphere. That is why one of the main problems facing the aviation industry of the Russian Federation is the problem of creating the aircraft meeting the requirements of their operation with the account for the climatic peculiarities, especially in the conditions of the influence of the extreme factors of the Arctic and the Extreme North. On the basis of the comprehensive analysis of the climatic factors of the Extreme North and the influence of these factors on the reliability of the aircraft units and systems' functioning in the actual operating conditions the classification of the kinds of failures was made, presented by six groups of events, conditioned by the state of the prolonged aircraft operation in the extreme conditions of the Extreme North and the Arctic regions. In order to evaluate the influence of the climatic factors on the reliability of the aircraft systems it was suggested to use stability coefficient of each element of the system, on the basis of which the estimation of the distribution of the events in flight, related to the functional elements' failure, was made. A block diagram of the multifactor optimization and the algorithm of the failure evaluation during the aircraft operation process modelling, dependent on the influence of the external extreme conditions was worked out.